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// -*- C++ -*-
// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the terms
// of the GNU General Public License as published by the Free Software
// Foundation; either version 3, or (at your option) any later
// version.
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied
// warranty.
/**
* @file cond_dealtor.hpp
* Contains a conditional deallocator.
*/
#ifndef PB_DS_COND_DEALTOR_HPP
#define PB_DS_COND_DEALTOR_HPP
namespace __gnu_pbds
{
namespace detail
{
#define PB_DS_COND_DEALTOR_CLASS_T_DEC \
template<typename Entry, class Allocator>
#define PB_DS_COND_DEALTOR_CLASS_C_DEC \
cond_dealtor< \
Entry, \
Allocator>
template<typename Entry, class Allocator>
class cond_dealtor
{
public:
typedef
typename Allocator::template rebind<Entry>::other
entry_allocator;
typedef typename entry_allocator::pointer entry_pointer;
public:
inline
cond_dealtor(entry_pointer p_e);
inline
~cond_dealtor();
inline void
set_no_action();
private:
entry_pointer m_p_e;
bool m_no_action_destructor;
static entry_allocator s_alloc;
};
PB_DS_COND_DEALTOR_CLASS_T_DEC
typename PB_DS_COND_DEALTOR_CLASS_C_DEC::entry_allocator
PB_DS_COND_DEALTOR_CLASS_C_DEC::s_alloc;
PB_DS_COND_DEALTOR_CLASS_T_DEC
inline
PB_DS_COND_DEALTOR_CLASS_C_DEC::
cond_dealtor(entry_pointer p_e) :
m_p_e(p_e),
m_no_action_destructor(false)
{ }
PB_DS_COND_DEALTOR_CLASS_T_DEC
inline void
PB_DS_COND_DEALTOR_CLASS_C_DEC::
set_no_action()
{
m_no_action_destructor = true;
}
PB_DS_COND_DEALTOR_CLASS_T_DEC
inline
PB_DS_COND_DEALTOR_CLASS_C_DEC::
~cond_dealtor()
{
if (m_no_action_destructor)
return;
s_alloc.deallocate(m_p_e, 1);
}
#undef PB_DS_COND_DEALTOR_CLASS_T_DEC
#undef PB_DS_COND_DEALTOR_CLASS_C_DEC
} // namespace detail
} // namespace __gnu_pbds
#endif // #ifndef PB_DS_COND_DEALTOR_HPP
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